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5

68-0047—2

VR8204; VR4204

INSTALLATION

USING ADAPTERS TO SOLVE SWING RADIUS
PROBLEMS

In some field service applications, it is difficult or im-

possible to thread the control onto the gas supply pipe
because of space limitations. Usually this problem can be
resolved by using an adapter. The adapter is installed on the
end of the supply pipe in place of the gas control, following
the same precautions and instructions that are used for
installing the gas control. After the adapter is installed, the
gas control is attached to the adapter as outlined above.
Note that the use of an adapter increases the overall length
of the gas control.

Fig. 2—Fasten flange to control with 25 inch-
pounds torque.

LOCATION

The combination gas control is mounted in the appli-

ance vestibule on the gas manifold. If this is a replacement
application, mount the gas control in the same location as
the old control.

Locate the combination gas control where it cannot be

affected by steam cleaning, high humidity, or dripping
water, corrosive chemicals, dust or grease accumulation or
excessive heat. To assure proper operation, follow these
guidelines:

• Locate gas control in a well-ventilated area.
• Mount gas control high enough above the cabinet

bottom to avoid exposure to flooding or splashing
water.

• Assure the ambient temperature does not exceed the

ambient temperature ratings for each component.

• Cover gas control if appliance is cleaned with water,

steam, or chemicals or to avoid dust and grease
accumulation.

• Avoid locating gas control where exposure to corro-

sive chemical fumes or dripping water are likely.

Install Piping To Gas Control

All piping must comply with local codes and ordinances

or with the National Fuel Gas Code (ANSI Z223.1 NFPA
No. 54), whichever applies. Tubing installation must com-
ply with approved standards and practices.

1. Use new, properly reamed pipe free from chips. If

tubing is used, make sure the ends are square, deburred and
clean. All tubing bends must be smooth and without defor-
mation.

2. Run pipe or tubing to the control. If tubing is used,

obtain a tube-to-pipe coupling to connect the tubing to the
control.

3. Install sediment trap in the supply line to the gas

control. See Fig. 3.

Install Control

1. This control can be mounted 0-90 degrees, in any

direction, including vertically, from the upright position of
the gas control knob.

2. Mount the control so gas flow is in the direction of

the arrow on the bottom of the control.

3. Thread pipe into control or adapter. Do not thread

pipe too far. Valve distortion or malfunction may result if
the pipe is inserted too deeply. Refer to Table 4.

TABLE 4—NPT PIPE THREAD LENGTH IN in.

M9050

VALVE OUTLET

FLANGE

9/64 INCH HEX SCREWS (4) 

6/32 INCH ROUND
SCREWS (1) 

CONDUIT
COVER,
VR4204
ONLY

DO NOT OVERTIGHTEN SCREWS.  TIGHTEN TO 
25 INCH-POUNDS.

1

1

Fig. 3—Sediment trap installation.

GAS
CONTROL

GAS
CONTROL

HORIZONTAL

DROP

PIPED
GAS
SUPPLY

PIPED
GAS
SUPPLY

3 INCHES
[76]
MINIMUM

3 INCHES
[76]
MINIMUM

RISER

GAS
CONTROL

TUBING
GAS
SUPPLY

HORIZONTAL

DROP

3 INCHES
[76]
MINIMUM

RISER

M3077

2

1

2

2

1

2

ALL BENDS IN METALLIC TUBING SHOULD BE SMOOTH.

CAUTION:  SHUT OFF THE MAIN GAS SUPPLY BEFORE REMOVING
END CAP TO PREVENT GAS FROM FILLING THE WORK AREA.  TEST 
FOR GAS LEAKAGE WHEN INSTALLATION IS COMPLETE.

Pipe

Size

Thread Pipe

This Amount

Maximum Depth Pipe Can

Be Inserted Into Control

3/8

9/16

3/8

1/2

3/4

1 /2

3/4

13/16

3/4

4. Apply a moderate amount of good quality pipe com-

pound (do not use Teflon tape) to pipe only, leaving two
end threads bare. On LP installations, use compound resis-
tant to LP gas.

Содержание TRADELINE VR8204A

Страница 1: ...supply is interrupted Two position gas control knob has ON and OFF posi tions All adjustments and wiring connections are accessible from top of the control Compact size Straight throughbodypattern rightangleadaptersavail able for inlet and outlet 1 2 in inlet and 1 2 in outlet adapters available for 3 8 or 3 4 in Adjustable servo regulator effectively maintains almost constant gas output pressure ...

Страница 2: ...dling and maximum replacement value TRADELINE model specifications are the same as those of standard models except as noted below TRADELINE MODEL AVAILABLE VR8204A Dual Automatic Combination Gas Control for Intermittent Pilot Systems Models for natural or LP gas TABLE 1 MODEL SPECIFICATIONS Model No Opening Charac Type Standard Factory Regulator Settings Optional Factory Regulator Settings Range o...

Страница 3: ...G Can be mounted 0 to 90 degrees in any direction including vertically from the upright position of the gas control knob TEMPERATURE RATING VR8204A C H and VR4204H 0 F to 175 F 18 C to 79 C VR8204M P K and VR4204M P 40 F to 175 F 40 C to 79 C DIMENSIONS See Fig 1 APPROVALS AmericanGasAssociationdesigncertificate L2025006 CanadianGasAssociationdesigncertificate L2025006 Australian Gas Association d...

Страница 4: ...MAGE SEVERE INJURY OR DEATH 1 Do not use a gas control set for natural gas on an LP gas system or a gas control set for LP gas on a natural gas system 2 When making conversion main pilot burner orifices must be changed to meet appliance manufacturer specifications Refer to appliance manufacturer instructions for orifice specifications and changeover procedure Gas controls are factory set for natur...

Страница 5: ...inances or with the National Fuel Gas Code ANSI Z223 1 NFPA No 54 whichever applies Tubing installation must com ply with approved standards and practices 1 Use new properly reamed pipe free from chips If tubing is used make sure the ends are square deburred and clean All tubing bends must be smooth and without defor mation 2 Run pipe or tubing to the control If tubing is used obtain a tube to pip...

Страница 6: ...IS USED M3079 Connect Pilot Gas Tubing 1 Cut tubing to desired length and bend as necessary for routing to pilot burner Do not make sharp bends or deform the tubing Do not bend tubing at control after compression nut has been tightened because this may result in gas leakage at the connection 2 Square off and remove burrs from end of tubing 3 Unscrew brass compression fitting from the pilot outlet ...

Страница 7: ...ig 2 5 Adjust thermostat heat anticipator as instructed in the appliance manual i e usually 0 1A for VR4204 0 5A for VR8204 Fig 8 Wiring connections for 24 volt control in intermittent ignition system with S8600 MV MV PV PV GND BURNER 24V GND 24V SPARK S8600 POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED ALTERNATE LIMIT CONTROLLER LOCATION MAXIMUM WIRE LENGTH 3 ft 9 m CO...

Страница 8: ... main burner in operation paint pipe joints including adapters and control inlet with rich soap and water solution 5 If another leak is detected tighten adapter screws joints and pipe connections 6 Replace part if leak cannot be stopped ADJUST PILOT FLAME The pilot flame should envelop 3 8 to 1 2 in 10 to 13 mm of the tip of the igniter sensor See Fig 10 To adjust pilot flame 1 Remove pilot adjust...

Страница 9: ...ired outlet pressure or flow rate cannot be achieved to adjusting the gas control check gas control inlet pressure using a manometer at the gas control inlet pressure tap If inlet pressure is in the nominal range see Table 4A or 4B replace gas control Otherwise take the necessary steps to provide proper gas pressure on the control Slow opening and Step opening Pressure Regulators 1 Check the full ...

Страница 10: ...stem should be replaced if It does not perform properly on checkout or trouble shooting The gas control knob is hard to turn The gas control is likely to have operated for more than 200 000 cycles Operation The VR8204 VR4204 gas controls provide ON OFF manual control of gas flow In the OFF position gas flow to both pilot and main burners is mechanically blocked In the ON position gas flows to the ...

Страница 11: ...servo pressure regulator pro vides close control of outlet pressure even if inlet pressure and flow rate vary widely Any outlet pressure change is immediately reflected back to the pressure regulator dia phragm which repositions to change the flow rate through the regulator valve and thus through the automatic valve If outlet pressure begins to rise the pressure regulator diaphragm moves slightly ...

Страница 12: ...outlet pressure as described for the standard regulator The step model requires approximately 60 seconds to reset once the main burner goes off If it is re energized within 60 seconds it may bypass or shorten the length of the low pressure step The burner may relight at the full flow rate WHEN THE CALL FOR HEAT ENDS When the call for heat ends the first automatic valve and the second automatic val...

Страница 13: ...at the gas control knob is in the ON position 2 Adjust thermostat several degrees above room tem perature 3 Using ac voltmeter check for voltage at gas control If pilot lights measure across MV PV and MV If pilot does not light measure across MV PV and PV before safety lockout occurs 4 If voltage is incorrect or not present check control circuit for proper operation 5 If voltage is present replace...

Страница 14: ...l application but the specific controls used and the procedures outlined by the manufac turer of your appliance may differ requiring special instructions TO TURN ON FURNACE STOP Read the safety information above 1 The lighting sequence on this appliance is automatic do not attempt to manually light the pilot 2 If the furnace does not come on when the thermostat is set several degrees above room te...

Страница 15: ...15 68 0047 2 ...

Страница 16: ...d Building Control Home and Building Control Helping You Control Your World Honeywell Inc Honeywell Limited Honeywell Limitée 1985 Douglas Drive North 740 Ellesmere Road Golden Valley MN 55422 Scarborough Ontario M1P 2V9 Printed in U S A ...

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